condolences vs solidarity

condolences

noun
  • comfort, support, or sympathy offered especially to the family and friends of somebody who has died. 

intj
  • Expressing sympathy to someone, especially after learning of a close death. 

solidarity

noun
  • Willingness to give psychological and/or material support when another person is in a difficult position or needs affection. 

  • A bond of unity or agreement between individuals, united around a common goal or against a common enemy, such as the unifying principle that defines the labor movement; mutual support within a group. 

How often have the words condolences and solidarity occurred in a corpus of books? (source: Google Ngram Viewer )